[PATCH net-next v5 5/5] net: renesas: rswitch: Add "max-speed" handling
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Date: 2023-02-01 13:15:36
Also in:
linux-renesas-soc
Subsystem:
networking drivers, renesas ethernet switch driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The previous code set the speed by the interface mode of PHY. Also this hardware has a restriction which cannot change the speed at runtime. To use other speed, add "max-speed" handling to set each port's speed if needed. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> --- drivers/net/ethernet/renesas/rswitch.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
index f1a0dd1098f9..50b61a0a7f53 100644
--- a/drivers/net/ethernet/renesas/rswitch.c
+++ b/drivers/net/ethernet/renesas/rswitch.c@@ -1072,13 +1072,23 @@ static struct device_node *rswitch_get_port_node(struct rswitch_device *rdev) static int rswitch_etha_get_params(struct rswitch_device *rdev) { + u32 max_speed; int err; if (!rdev->np_port) return 0; /* ignored */ err = of_get_phy_mode(rdev->np_port, &rdev->etha->phy_interface); + if (err) + return err; + + err = of_property_read_u32(rdev->np_port, "max-speed", &max_speed); + if (!err) { + rdev->etha->speed = max_speed; + return 0; + } + /* if no "max-speed" property, let's use default speed */ switch (rdev->etha->phy_interface) { case PHY_INTERFACE_MODE_MII: rdev->etha->speed = SPEED_100;
@@ -1090,11 +1100,10 @@ static int rswitch_etha_get_params(struct rswitch_device *rdev) rdev->etha->speed = SPEED_2500; break; default: - err = -EINVAL; - break; + return -EINVAL; } - return err; + return 0; } static int rswitch_mii_register(struct rswitch_device *rdev)
--
2.25.1